Data Quality Reports for Session: 101174 User: troyan Completed: 08/17/2006

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D060119.1NSA/METTWR/C1 - CMH Data Not Representativensamettwr4hC1.b1
D060215.4NSA/METTWR/C1 - CMH Data missingnsamettwr4hC1.b1
D060220.1NSA/METTWR/C1 - Ultrasonic Wind Sensor Values Incorrectnsamettwr4hC1.b1
D060220.2NSA/METTWR/C1 - PWS data missing due to blizzardnsamettwr4hC1.b1
D060224.1NSA/METTWR/C1 - 2m Wind Speed Artificially Lownsamettwr4hC1.b1
D060303.2NSA/METTWR/C1 - CMH temp inaccuratensamettwr4hC1.b1
D060323.1NSA/METTWR/C1 - 10m Wind Speed Lownsamettwr4hC1.b1
D060323.2NSA/METTWR/C1 - 10m Wind Speed Intermittently Lownsamettwr4hC1.b1
D060323.3NSA/METTWR/C1 - 40m Wind Speeds Intermittently Lownsamettwr4hC1.b1
D060323.4NSA/METTWR/C1 - 20m Wind Speeds Intermittently Lownsamettwr4hC1.b1


DQRID : D060119.1
Start DateStart TimeEnd DateEnd Time
01/09/2006012001/09/20062330
Subject:
NSA/METTWR/C1 - CMH Data Not Representative
DataStreams:nsamettwr4hC1.b1
Description:
The intake of the CMH was blocked with hoar frost.  The temperatures measured by the 
chilled mirror and the temperature probe were not representative of the ambient conditions as 
a result.  The RH data calculated from these values is incorrect also.
Measurements:nsamettwr4hC1.b1:
  • Chilled Mirror Calculated Vapor Pressure(VPCMH)
  • Chilled Mirror Calculated Relative Humidity(CMHRH)
  • Chilled Mirror Dew Point(CMHDP)
  • Chilled Mirror Temperature(CMHTemp)
  • Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)

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DQRID : D060215.4
Start DateStart TimeEnd DateEnd Time
02/15/2006120402/15/20062222
Subject:
NSA/METTWR/C1 - CMH Data missing
DataStreams:nsamettwr4hC1.b1
Description:
CMH dew point and temp data was missing. Since Dew Point and Temp data missing RH% value = 
100% during outage.  Corrosion on power plug was athe problem.
Measurements:nsamettwr4hC1.b1:
  • Chilled Mirror Calculated Vapor Pressure(VPCMH)
  • Chilled Mirror Calculated Relative Humidity(CMHRH)
  • Chilled Mirror Dew Point(CMHDP)
  • Chilled Mirror Temperature(CMHTemp)
  • Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)

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DQRID : D060220.1
Start DateStart TimeEnd DateEnd Time
02/19/2006182902/20/20060400
Subject:
NSA/METTWR/C1 - Ultrasonic Wind Sensor Values Incorrect
DataStreams:nsamettwr4hC1.b1
Description:
The values collected from the ultrasonic wind sensor were intermittently incorrect.  Heavy 
wet snow during blizzard condition was interfering with the ultrasonic readings.
Measurements:nsamettwr4hC1.b1:
  • Sonic Arithmetic Mean Wind Speed(SonicWS_S_WVT)
  • Sonic Vector Averaged Wind Direction(SonicWD_DU_WVT)
  • Average Y Component of Sonic Wind Speed(SonicY_AVG)
  • Standard Deviation of Sonic Vector Averaged Wind Direction(SonicWD_SDU_WVT)
  • Average Sonic Static Speed of Sound(SonicS_AVG)
  • Sonic Vector Averaged Wind Speed(SonicWS_U_WVT)
  • Average X Component of Sonic Wind Speed(SonicX_AVG)

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DQRID : D060220.2
Start DateStart TimeEnd DateEnd Time
02/19/2006163202/20/20062137
Subject:
NSA/METTWR/C1 - PWS data missing due to blizzard
DataStreams:nsamettwr4hC1.b1
Description:
PWS was offline and data was missing.  A blizzard consisting of heavy wet snow and strong 
winds caused snow impaction in the optics.  The PWS reported missing data as it was 
unable to measure anything meaningful.
Measurements:nsamettwr4hC1.b1:
  • 15 minute Present Weather Code(PwCod15mi)
  • 1 minute Average Visibility(AvgVis1mi)
  • Instant Present Weather Code(InstPwCod)
  • 1 hour Present Weather Code(PwCod1hr)
  • Cumulative Snow Sum(CumSnow)
  • 10 minute Average Visibility(AvgVis10m)
  • Precipitation Rate(PcpRate)
  • Present Weather Sensor Alarm(PWSAlarm)

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DQRID : D060224.1
Start DateStart TimeEnd DateEnd Time
02/19/2006201002/20/20060934
Subject:
NSA/METTWR/C1 - 2m Wind Speed Artificially Low
DataStreams:nsamettwr4hC1.b1
Description:
The 2m wind speed values were artificially low due to snow impaction during a heavy 
blizzard.  The cup anemometer heaters could not keep up with the rapid deposition of snow.
Measurements:nsamettwr4hC1.b1:
  • 2m Vector Averaged Wind Speed(WS2M_U_WVT)
  • 2m Arithmetic Mean Wind Speed(WS2M_S_WVT)

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DQRID : D060303.2
Start DateStart TimeEnd DateEnd Time
02/28/2006070003/06/20062100
Subject:
NSA/METTWR/C1 - CMH temp inaccurate
DataStreams:nsamettwr4hC1.b1
Description:
The CMH Temperature was consistently 4-7 degrees warmer than the 2M, 40M, 20M, and 10M 
temp. Intake fan failure; fan was replaced.
Measurements:nsamettwr4hC1.b1:
  • Chilled Mirror Calculated Vapor Pressure(VPCMH)
  • Chilled Mirror Calculated Relative Humidity(CMHRH)
  • Chilled Mirror Dew Point(CMHDP)
  • Chilled Mirror Temperature(CMHTemp)
  • Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)

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DQRID : D060323.1
Start DateStart TimeEnd DateEnd Time
01/02/2006050001/06/20061745
01/14/2006120201/23/20061140
Subject:
NSA/METTWR/C1 - 10m Wind Speed Low
DataStreams:nsamettwr4hC1.b1
Description:
The 10m wind speed values are too low due to ice accumulation on the cup anemometer.
Measurements:nsamettwr4hC1.b1:
  • 10m Arithmetic Mean Wind Speed(WS10M_S_WVT)
  • 10m Vector Averaged Wind Speed(WS10M_U_WVT)

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DQRID : D060323.2
Start DateStart TimeEnd DateEnd Time
01/09/2006103001/13/20060402
Subject:
NSA/METTWR/C1 - 10m Wind Speed Intermittently Low
DataStreams:nsamettwr4hC1.b1
Description:
The 10m wind speeds are intermittently too low due to ice accumulation on the cup 
anemometer.
Measurements:nsamettwr4hC1.b1:
  • 10m Arithmetic Mean Wind Speed(WS10M_S_WVT)
  • 10m Vector Averaged Wind Speed(WS10M_U_WVT)

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DQRID : D060323.3
Start DateStart TimeEnd DateEnd Time
01/10/2006060001/13/20060402
01/26/2006160201/27/20060516
02/03/2006002002/05/20060540
Subject:
NSA/METTWR/C1 - 40m Wind Speeds Intermittently Low
DataStreams:nsamettwr4hC1.b1
Description:
The 40m wind speed values were too low due to ice accumulation on the cup anemometer.
Measurements:nsamettwr4hC1.b1:
  • 40m Vector Averaged Wind Speed(WS40M_U_WVT)
  • 40m Arithmetic Mean Wind Speed(WS40M_S_WVT)

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DQRID : D060323.4
Start DateStart TimeEnd DateEnd Time
01/12/2006081201/13/20060402
02/03/2006011502/03/20061603
Subject:
NSA/METTWR/C1 - 20m Wind Speeds Intermittently Low
DataStreams:nsamettwr4hC1.b1
Description:
The 20m wind speeds were artificially low due to ice accumulation on the cup anemometer.
Measurements:nsamettwr4hC1.b1:
  • 20m Vector Averaged Wind Speed(WS20M_U_WVT)
  • 20m Arithmetic Mean Wind Speed(WS20M_S_WVT)

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